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Stay Safe. Have you been in an accident or experiencing excessive wiggle or play in your rear wheels? Then you may need to replace those worn out Rear IRS Knuckles and Wheel Hub Assemblies with a brand new set from Ford Racing. Bad knuckles and bearings are not something to be ignored, they should be replaced ASAP to avoid a possible accident.

IRS Knuckles. The included Ford Racing IRS Knuckles are manufactured to the original factory specifications from cast aluminum for superior strength and light weight. The Knuckles come with the bushings and steel roller bearings pre-installed for ease of installation.

Genuine Ford Part. These genuine Ford Wheel Hub Assemblies are manufactured to the original factory specifications from OEM quality materials. The assemblies come complete with the bearings and studs already pressed into the hub for easier installation.

Application. This Ford Racing IRS Knuckle and Hub Kit is designed to be a direct fit replacement for all 2015 to 2018 S550 Mustangs, including the V6, EcoBoost, GT and Shelby GT350 models.

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Questions & Answers (1)

1 Top Rated Question

will this knuckle kit work with the GT350 rear brake system. I have a GT but getting ready to install a gt350 rear brake set up. According to the fords parts numbers (OEM) the knuckles for the GT and GT350 are different part numbers. Thanks

The Ford Performance IRS Knuckle and Hub Kit is compatible with GT350 rear brakes. This kit is designed to work with all models, including GT and GT350.

After having the unfortunately typical problem of an axle nut backing off and subsequently ruining a rear wheel bearing, I for sure needed new wheel bearings. I also wanted the toe link bearings, but heard a few horror stories about getting them installed (some seem to go easy, others need a 20 ton shop press). This kit gave me new rear wheel bearings and knuckles with the toe link bearings already installed. Includes the new hardware to install the wheel bearings to the knuckles. Bolted those together, then removed old knuckle/bearing assemblies and installed these. Went in easily, tweaked the alignment, and they work great! Toe link bearing does more than I expected; nice improvement during hard cornering. And of course my wheel bearings are quiet again. Took a few hours to install from start to finish, but once done with one side and you figure out what all to do the other side is about 30 minutes.

OEM fitment, with the added bonus of spherical toe bearings installed and a spare set of hubs. If you don't have a press for the sphericals, want to save yourself the hassle, or need to save your stock knuckles as-is, this is the droid you are looking for!

Ford Performance IRS Knuckle and Hub Kit (15-18 All)

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On my most recent order from AM I had some challenges with the product installation. The customer service team at AM resolved all of my challenges quickly, efficiently and pleasantly. At all times their customer service team exceeded my expectations. I have pulled all of the other car supplier catalogs from my magazine racks except the American Muscle catalog. From now on my Mustang only rides with American Muscle. Thank you for exceeding my expectations.